Air freshener



FIG. 1 is a side elevation view of an air freshener, showing my new design, the opposite side is identical thereto;

FIG. 2 is a side elevation view similar to FIG. 1, but with the air freshener rotated about its vertical axis through 90°; the side opposite is identical thereto;

FIG. 3 is a top plan view of the air freshener of FIG. 1; and,

FIG. 4 is a bottom plan view of the air freshener of FIG. 1. 

The ornamental design for an air freshener, as shown and described. 